通过Node.js控制台获取用户输入

问题描述

我刚刚开始使用Node.js，但我不知道如何获取用户输入.我正在寻找python函数 input()或C函数 gets 的JavaScript对应版本.谢谢.

I have just started using Node.js, and I don't know how to get user input. I am looking for the JavaScript counterpart of the python function input() or the C function gets. Thanks.

推荐答案

您可以使用 readline 或 prompt ，所以我将向您介绍两个示例...

You could use readline or prompt, so I will walk you through both examples...

readline 是Node.js中的内置模块.您只需要运行以下代码:

readline is a built-in module in Node.js. You only need to run the code below:

const readline = require("readline");
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

rl.question("What is your name ? ", function(name) {
    rl.question("Where do you live ? ", function(country) {
        console.log(`${name}, is a citizen of ${country}`);
        rl.close();
    });
});

rl.on("close", function() {
    console.log("\nBYE BYE !!!");
    process.exit(0);
});

如果所有这些听起来都很复杂，请查看提示示例.

If all of this sounds complicated, please have a look at prompt example.

提示是npm上可用的模块:

prompt is a module available on npm:

运行命令 npm install提示符来安装软件包，然后复制/粘贴以下代码:

Run the command npm install prompt to install the package, and then copy/paste the following code:

const prompt = require('prompt');

prompt.start();

prompt.get(['username', 'email'], function (err, result) {
    if (err) { return onErr(err); }
    console.log('Command-line input received:');
    console.log('  Username: ' + result.username);
    console.log('  Email: ' + result.email);
});

function onErr(err) {
    console.log(err);
    return 1;
}

享受！

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